As a venue for America's Grammy music awards, the Radio City music hall in New York has showcased stars from Michael Jackson to Lady Gaga, but on Thursday the headline act will be the world's next blockbuster smartphone.

In the pantheon of artistic merit, games of films occupy a position somewhere in the darkest, dankest recesses of the basement along with the likes of reality TV and misery memoirs. Invariably games released on the back of films end up as mere items of supporting merchandise, hopelessly rushed and insubstantial, that leave gamers and movie buffs equally unsatisfied. So